Well in such case if you have taken many one to one meetings with that rude guy to make him convince to work property.

Then next step is to talk with him as a friend and try to get the matter because of which he is behaving like this. If the you can get the problem that why hi is behaving like this then there may be a many solutions. If his reason of behaving like this is correct then you can try to resolve the issue according to him.

But the reason you get by the rude guy is not proper or correct then you can explain him the draw backs of his behaviour. If it is his tendency to behave like this then you can explain him about his future with this attitude.

And finally if he is not able to understand your language...then warn him once or two and after that just sit with him against the managing team and try to get the solution from management regarding his rude behaviour.